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Author Topic:   handling problems
nanci
Dirt Newbie

Total posts: 2
posted August 17, 2001 05:58 PM
I race a 76 Monte with a 350 in the hobby stock class on a 1/4 mile clay track with some banking. The car has too much push coming out of the corners and cars pass me like I am sitting still on the straights...I have a new 1300# afco spring in the LF and an 1100 in the RF 275 LR and 250 RR both rear are 10" and front are 12". I am also running with about 100# of weights over the RR tire. The gears are 3.73 and we run a 3 ring trans. in 2nd gear taching about 4500 in the corners and 6000 in the straights. Oh and the tires are all stock ranging from P235 75/r15 to 205 75/r15...I have tried a few different set ups with tire pressure and stagger but really have no clue what I am doing. This is obviously my first year. I am getting tired of eating clay and this is my 3rd motor...HELP!

racer2
Dirt Full Roller

Total posts: 29
posted August 17, 2001 08:50 PM
you really need to scale the car and see what the cross weight and the rear weight is..

shorty68
Dirt Newbie

Total posts: 3
posted August 20, 2001 12:13 PM
Sounds to me like all of your springs are backwards. It should be the stronger springs on the right side. Also the extra weight should be behind the driver but in front of the rear end. Start with that and see if that helps.

AJ GARBE70
Dirt Moderator

Total posts: 59
posted August 20, 2001 08:55 PM
i woul switch sides with the front springs and put that 1300 on the rf and the 1100 on the lf that should help a little what banking is your track good luck aj

millerlt3
Dirt Roller

Total posts: 22
posted August 20, 2001 08:59 PM
The LF #1300 spring is definitly heavy an #1100 RF is a good spring rate. I have always gone with a #200 split across the front. So if the RF is #1100 try a #900 spring in the LF.

nanci
Dirt Newbie

Total posts: 2
posted August 23, 2001 04:56 PM
quote:
Originally posted by racer2:
you really need to scale the car and see what the cross weight and the rear weight is..

Thanks, we had the car scaled and we were a about 100lbs too light in the back. We are now at 57%Front 43% rear with a cross weight of 50% total car weight of 3708. I mistakenly entered the springs backwards, the 1300# is on the RF and 1100# on LF. However the car is now sitting with the front about 4" higher than the rear.

RangeRover
Dirt Full Roller

Total posts: 37
posted August 23, 2001 05:22 PM
Whoa, your car is heavy! If rules allow, put that thing on a serious diet. You are way too high on the front % which would indicate that you might be extremely loose rather than tight- that's the rear end sliding out from underneath you, unless there are other issues we don't know about. I think you need to pay immediate attention to your overall weight and its distribution before anything else.

For now, however, if you are in fact pushing hard on exit, try adding stagger to help the car turn in the middle of the corner, lower the placement of ballast weight to reduce overall sidebite, and make sure that your rear wheel offsets don't move the tires leftward- driver's side. Give more details on how you go through the corners and how the car acts.

P23
Dirt Roller

Total posts: 14
posted August 24, 2001 02:11 AM UIN: 111782537
I was going to suggest the scales too,It really helped me out this year.I see some people talking about your weight.The commaon thought is lighter is better,My truck tips the scales a 3500lbs. and handles perfectly,one of our fastest cars is a 69 roadrunner(A BIG BOAT).I'm not expierineced enough to talk about spring weights and all that,just a curious question,do all of you peoples cars go sideways in the corners?My truck is the only one on our track that goes straight.I didn't build my truck but I think I know why it handles like this.My rear end is stightly off set from the front end,so while all the cars set up for the corners I just slow down a bit then hammer it,no pushing or side ways motion.I don't know if the offset causes this or not but I know it works.

juni
Dirt Full Roller

Total posts: 29
posted August 24, 2001 08:55 AM
Your spring rates are to heavy . I think some where around 1100 rf 1000 lf 12inches tall rears around 300 lr 250 rr 11inch tall or 12. try and remove some front weight , if i rember rite the front bumper on your car weighs a ton so see if you can put one off a smaller car .
You should scale around 51 to 54% cross weight ,inside weight around 53% and rear around 53% to 58% depending on the track condition stagger around 2inches front and rear . These are some general starting points . If you don't have scales email me and i can tell you a couple things that we use to do before we had scales to get a car to handle They are kind of red neck but helped us out i think

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